private async Task HandleActionRequest(UIActionSettings actionRequest)
{
await actionLock.WaitAsync();
try
{
switch (actionRequest.Action)
{
case UIActions.DrawTitle:
await Connection.SetImageAsync((string)null);
await Connection.SetTitleAsync(actionRequest.Title);
break;
case UIActions.DrawImage:
await Connection.SetTitleAsync((string)null);
await DrawImage(actionRequest);
break;
}
}
catch (Exception ex)
{
Logger.Instance.LogMessage(TracingLevel.ERROR, $"DisplayAction HandleActionRequest Exception: {ex}");
}
finally
{
actionLock.Release();
}
}
private async void Instance_UIActionEvent(object sender, Wrappers.UIActionEventArgs e)
{
try
{
UIActionSettings action = null;
if (e.AllKeysAction) // If event is marked for "All Keys", get the first one
{
action = e.Settings[0];
}
else
{
// Try and find an action in the list that is for this specific coordinates
action = e.Settings.Where(actn => actn.Coordinates.IsCoordinatesSame(coordinates)).FirstOrDefault();
}
if (action != null)
{
await HandleActionRequest(action);
}
}
catch (Exception ex)
{
Logger.Instance.LogMessage(TracingLevel.ERROR, $"UIActionEvent Exception: {ex}");
}
}
private async Task DrawImage(UIActionSettings actionRequest)
{
//Logger.Instance.LogMessage(TracingLevel.INFO, $"Row {coordinates.Row} Column {coordinates.Column} Color {(actionRequest.BackgroundColor.HasValue ? actionRequest.BackgroundColor.Value.ToString() : "")} Title {actionRequest.Title ?? ""}");
using (var img = await CreateImage(actionRequest))
{
await Connection.SetImageAsync(img);
}
}
private void DrawPrevKey()
{
var action = new UIActionSettings()
{
Coordinates = PREV_KEY_LOCATION, Action = UIActions.DrawImage, Image = prefectchedImages[PREV_IMAGE], BackgroundColor = Color.Black
};
UIManager.Instance.SendUIAction(action);
}
private async Task <Bitmap> CreateImage(UIActionSettings actionRequest)
{
Bitmap img = Tools.GenerateGenericKeyImage(out Graphics graphics);
if (img == null)
{
Logger.Instance.LogMessage(TracingLevel.ERROR, $"DrawImage failed, GenerateGenericKeyImage returned null");
return(null);
}
int height = img.Height;
int width = img.Width;
// If there is an image, draw it, otherwise, check for background
if (actionRequest.Image != null)
{
var scaledImage = ScaleImage(await CloneImage(actionRequest.Image), new Size(width, height));
if (scaledImage != null)
{
graphics.DrawImage(scaledImage, new Point(0, 0));
}
}
else
{
// Background
var bgBrush = new SolidBrush(actionRequest.BackgroundColor ?? Color.Black);
graphics.FillRectangle(bgBrush, 0, 0, width, height);
}
// If a FontAwesome image is requested, draw it in the center
if (actionRequest.FontAwesomeIcon.HasValue)
{
Image icon;
// Special handling for Mute Icon
if (actionRequest.FontAwesomeIcon == IconChar.VolumeMute)
{
icon = Image.FromFile(MUTE_ICON_PATH);
}
else
{
icon = actionRequest.FontAwesomeIcon.Value.ToBitmap(Color.Red, ICON_SIZE_PIXELS);
}
float iconWidth = (width - icon.Width) / 2;
float iconHeight = (height - icon.Height) / 2;
PointF iconStart = new PointF(iconWidth, iconHeight);
graphics.DrawImage(icon, iconStart);
icon.Dispose();
}
// Draw text title if needed
if (!String.IsNullOrEmpty(actionRequest.Title))
{
using (var font = new Font("Verdana", 24, FontStyle.Bold, GraphicsUnit.Pixel))
{
var fgBrush = Brushes.White;
string[] titleLines = actionRequest.Title.Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries).Reverse().ToArray();
SizeF stringSize = graphics.MeasureString(titleLines[0], font);
float stringHeight = Math.Abs((height - stringSize.Height - 3));
foreach (string line in titleLines)
{
float textCenter = graphics.GetTextCenter(line, img.Width, font, out _);
float newPosition = graphics.DrawAndMeasureString(line, font, fgBrush, new PointF(textCenter, stringHeight));
stringHeight -= (newPosition - stringHeight);
}
}
}
return(img);
}
public void SendUIAction(UIActionSettings actionSettings)
{
UIActionEventArgs action = new UIActionEventArgs(new UIActionSettings[] { actionSettings }, false);
UIActionEvent?.Invoke(this, action);
}
public void SetAllKeys(UIActionSettings actionSettings)
{
UIActionEventArgs action = new UIActionEventArgs(new UIActionSettings[] { actionSettings }, true);
UIActionEvent?.Invoke(this, action);
}
